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ID

VAR-202101-1926


CVE

CVE-2021-3156


TITLE

Sudo set_cmd() is vulnerable to heap-based buffer overflow

Trust: 0.8

sources: CERT/CC: VU#794544

DESCRIPTION

Sudo before 1.9.5p2 contains an off-by-one error that can result in a heap-based buffer overflow, which allows privilege escalation to root via "sudoedit -s" and a command-line argument that ends with a single backslash character. A heap-based overflow has been discovered in the set_cmd() function in sudo, which may allow a local attacker to execute commands with elevated administrator privileges.CVE-2021-3156 AffectedCVE-2021-3156 Affected. sudo has a heap-based buffer overflow due to the implementation of escaping special characters set in command arguments (CWE-122) Vulnerability exists. 2021 Year 2 Moon 5 As of the date macOS , AIX , Solaris It has been reported that it may also be affected by the virus, but it has not been confirmed by the finder. note that, 2021 Year 2 Moon 9 On the day Apple has released a security update to address this issue.A local third party can elevate privileges and execute commands with administrator privileges. 7.3) - x86_64 3. 8.2) - aarch64, ppc64le, s390x, x86_64 3. This update provides the corresponding update for Ubuntu 12.04 ESM and Ubuntu 14.04 ESM. ========================================================================== Ubuntu Security Notice USN-4705-1 January 26, 2021 sudo vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 20.10 - Ubuntu 20.04 LTS - Ubuntu 18.04 LTS - Ubuntu 16.04 LTS Summary: Several security issues were fixed in Sudo. A local attacker could possibly use this issue to obtain unintended access to the administrator account. (CVE-2021-3156) It was discovered that the Sudo sudoedit utility incorrectly handled checking directory permissions. A local attacker could possibly use this issue to bypass file permissions and determine if a directory exists or not. (CVE-2021-23239) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 20.10: sudo 1.9.1-1ubuntu1.1 sudo-ldap 1.9.1-1ubuntu1.1 Ubuntu 20.04 LTS: sudo 1.8.31-1ubuntu1.2 sudo-ldap 1.8.31-1ubuntu1.2 Ubuntu 18.04 LTS: sudo 1.8.21p2-3ubuntu1.4 sudo-ldap 1.8.21p2-3ubuntu1.4 Ubuntu 16.04 LTS: sudo 1.8.16-0ubuntu1.10 sudo-ldap 1.8.16-0ubuntu1.10 In general, a standard system update will make all the necessary changes. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ==================================================================== Red Hat Security Advisory Synopsis: Important: sudo security update Advisory ID: RHSA-2021:0223-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2021:0223 Issue date: 2021-01-26 CVE Names: CVE-2021-3156 ==================================================================== 1. Summary: An update for sudo is now available for Red Hat Enterprise Linux 7.6 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. 2. Relevant releases/architectures: Red Hat Enterprise Linux ComputeNode EUS (v. 7.6) - x86_64 Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.6) - x86_64 Red Hat Enterprise Linux Server EUS (v. 7.6) - ppc64, ppc64le, s390x, x86_64 Red Hat Enterprise Linux Server Optional EUS (v. 7.6) - ppc64, ppc64le, s390x, x86_64 Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) - aarch64, ppc64le, s390x Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) - aarch64, ppc64le, s390x 3. Description: The sudo packages contain the sudo utility which allows system administrators to provide certain users with the permission to execute privileged commands, which are used for system management purposes, without having to log in as root. Security Fix(es): * sudo: Heap buffer overflow in argument parsing (CVE-2021-3156) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. 4. Solution: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 5. Bugs fixed (https://bugzilla.redhat.com/): 1917684 - CVE-2021-3156 sudo: Heap buffer overflow in argument parsing 6. Package List: Red Hat Enterprise Linux ComputeNode EUS (v. 7.6): Source: sudo-1.8.23-3.el7_6.2.src.rpm x86_64: sudo-1.8.23-3.el7_6.2.x86_64.rpm sudo-debuginfo-1.8.23-3.el7_6.2.x86_64.rpm Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.6): x86_64: sudo-debuginfo-1.8.23-3.el7_6.2.i686.rpm sudo-debuginfo-1.8.23-3.el7_6.2.x86_64.rpm sudo-devel-1.8.23-3.el7_6.2.i686.rpm sudo-devel-1.8.23-3.el7_6.2.x86_64.rpm Red Hat Enterprise Linux Server EUS (v. 7.6): Source: sudo-1.8.23-3.el7_6.2.src.rpm ppc64: sudo-1.8.23-3.el7_6.2.ppc64.rpm sudo-debuginfo-1.8.23-3.el7_6.2.ppc64.rpm ppc64le: sudo-1.8.23-3.el7_6.2.ppc64le.rpm sudo-debuginfo-1.8.23-3.el7_6.2.ppc64le.rpm s390x: sudo-1.8.23-3.el7_6.2.s390x.rpm sudo-debuginfo-1.8.23-3.el7_6.2.s390x.rpm x86_64: sudo-1.8.23-3.el7_6.2.x86_64.rpm sudo-debuginfo-1.8.23-3.el7_6.2.x86_64.rpm Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7): Source: sudo-1.8.23-3.el7_6.2.src.rpm aarch64: sudo-1.8.23-3.el7_6.2.aarch64.rpm sudo-debuginfo-1.8.23-3.el7_6.2.aarch64.rpm ppc64le: sudo-1.8.23-3.el7_6.2.ppc64le.rpm sudo-debuginfo-1.8.23-3.el7_6.2.ppc64le.rpm s390x: sudo-1.8.23-3.el7_6.2.s390x.rpm sudo-debuginfo-1.8.23-3.el7_6.2.s390x.rpm Red Hat Enterprise Linux Server Optional EUS (v. 7.6): ppc64: sudo-debuginfo-1.8.23-3.el7_6.2.ppc.rpm sudo-debuginfo-1.8.23-3.el7_6.2.ppc64.rpm sudo-devel-1.8.23-3.el7_6.2.ppc.rpm sudo-devel-1.8.23-3.el7_6.2.ppc64.rpm ppc64le: sudo-debuginfo-1.8.23-3.el7_6.2.ppc64le.rpm sudo-devel-1.8.23-3.el7_6.2.ppc64le.rpm s390x: sudo-debuginfo-1.8.23-3.el7_6.2.s390.rpm sudo-debuginfo-1.8.23-3.el7_6.2.s390x.rpm sudo-devel-1.8.23-3.el7_6.2.s390.rpm sudo-devel-1.8.23-3.el7_6.2.s390x.rpm x86_64: sudo-debuginfo-1.8.23-3.el7_6.2.i686.rpm sudo-debuginfo-1.8.23-3.el7_6.2.x86_64.rpm sudo-devel-1.8.23-3.el7_6.2.i686.rpm sudo-devel-1.8.23-3.el7_6.2.x86_64.rpm Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7): aarch64: sudo-debuginfo-1.8.23-3.el7_6.2.aarch64.rpm sudo-devel-1.8.23-3.el7_6.2.aarch64.rpm ppc64le: sudo-debuginfo-1.8.23-3.el7_6.2.ppc64le.rpm sudo-devel-1.8.23-3.el7_6.2.ppc64le.rpm s390x: sudo-debuginfo-1.8.23-3.el7_6.2.s390.rpm sudo-debuginfo-1.8.23-3.el7_6.2.s390x.rpm sudo-devel-1.8.23-3.el7_6.2.s390.rpm sudo-devel-1.8.23-3.el7_6.2.s390x.rpm These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key/ 7. References: https://access.redhat.com/security/cve/CVE-2021-3156 https://access.redhat.com/security/updates/classification/#important https://access.redhat.com/security/vulnerabilities/RHSB-2021-002 8. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at https://access.redhat.com/security/team/contact/ Copyright 2021 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIVAwUBYBCATtzjgjWX9erEAQiDkQ/8CyCFW0G3itmCMGwXsP5atS6Tgqc4zwbC ofAgAgWoKKlwelFIMra1XlbcwSiqDKyxRvZVXiberbmvsecRShd7y29CMf75R2FO P7qGv5BY8BLX0zDwHHNTSCdX4EXoMi4OUUzmO4JEgys8Vc0QfLyEpQJbIPJaeE/C OI6niwwsSKeB06CjOpmHef/xoltdiCRkAJ84A3wBN8L603Lbl7Ou1PpomXFTmBpx 1ZI+vHe+rGXLMLYsJOyZSi87spHiXX7ZUwHwf3LOpQvIEP3tTU7QVykAsB2nIWIh VVqjPwOeK4wxM1xn2DtBAeBE1m3QG9xBirIQosAUqh8v7coWyy+kNZxxnFKS8v5F ZuQpsM2c0EbEcz7QL703in6m/1fG8oT6QI/K0PQvAQBlxt4XG0N1Shz1XfCa884z 0xF5C31bd8tDOuakZNPg7ePLXpaZtyn/CZ5kyWIaSkMV5J1vYZIHPyJpb83QecUr c9vjQgD49kz2FzwJkGPcWAeqjBVFrRbE7TJQ8IAzkM08x6XeKuLp8sXixzhXzboy 9TBb65s22fEiHlMCcqW62QJGELPDLSwVvjasnX0tzkSE5t6NYV6HDbHRYcHJEG2b BWwYRlTvgfK1sodYoCGs6IeJVD8nHIeflNgkn0WQIbOznJjmBjgXXGGdj0XPDDuD l3p+edOWn0U=GeG5 -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce

Trust: 2.97

sources: NVD: CVE-2021-3156 // CERT/CC: VU#794544 // JVNDB: JVNDB-2021-001020 // VULHUB: VHN-383931 // VULMON: CVE-2021-3156 // PACKETSTORM: 161139 // PACKETSTORM: 161140 // PACKETSTORM: 161163 // PACKETSTORM: 161135 // PACKETSTORM: 161145

AFFECTED PRODUCTS

vendor:netappmodel:hci management nodescope:eqversion: -

Trust: 1.0

vendor:sudomodel:sudoscope:gteversion:1.9.0

Trust: 1.0

vendor:oraclemodel:communications performance intelligence centerscope:lteversion:10.3.0.2.1

Trust: 1.0

vendor:netappmodel:ontap select deploy administration utilityscope:eqversion: -

Trust: 1.0

vendor:oraclemodel:micros es400scope:gteversion:400

Trust: 1.0

vendor:oraclemodel:communications performance intelligence centerscope:lteversion:10.4.0.3.1

Trust: 1.0

vendor:debianmodel:linuxscope:eqversion:9.0

Trust: 1.0

vendor:mcafeemodel:web gatewayscope:eqversion:10.0.4

Trust: 1.0

vendor:beyondtrustmodel:privilege management for macscope:ltversion:21.1.1

Trust: 1.0

vendor:mcafeemodel:web gatewayscope:eqversion:9.2.8

Trust: 1.0

vendor:oraclemodel:micros es400scope:lteversion:410

Trust: 1.0

vendor:synologymodel:skynasscope:eqversion: -

Trust: 1.0

vendor:oraclemodel:communications performance intelligence centerscope:gteversion:10.3.0.0.0

Trust: 1.0

vendor:fedoraprojectmodel:fedorascope:eqversion:32

Trust: 1.0

vendor:synologymodel:diskstation managerscope:eqversion:6.2

Trust: 1.0

vendor:sudomodel:sudoscope:ltversion:1.8.32

Trust: 1.0

vendor:oraclemodel:micros kitchen display systemscope:eqversion:210

Trust: 1.0

vendor:beyondtrustmodel:privilege management for unix\/linuxscope:ltversion:10.3.2-10

Trust: 1.0

vendor:sudomodel:sudoscope:ltversion:1.9.5

Trust: 1.0

vendor:oraclemodel:tekelec platform distributionscope:gteversion:7.4.0

Trust: 1.0

vendor:synologymodel:diskstation manager unified controllerscope:eqversion:3.0

Trust: 1.0

vendor:oraclemodel:micros compact workstation 3scope:eqversion:310

Trust: 1.0

vendor:netappmodel:solidfirescope:eqversion: -

Trust: 1.0

vendor:mcafeemodel:web gatewayscope:eqversion:8.2.17

Trust: 1.0

vendor:oraclemodel:micros workstation 6scope:gteversion:610

Trust: 1.0

vendor:fedoraprojectmodel:fedorascope:eqversion:33

Trust: 1.0

vendor:netappmodel:cloud backupscope:eqversion: -

Trust: 1.0

vendor:sudomodel:sudoscope:gteversion:1.8.2

Trust: 1.0

vendor:netappmodel:oncommand unified manager core packagescope:eqversion: -

Trust: 1.0

vendor:synologymodel:vs960hdscope:eqversion: -

Trust: 1.0

vendor:debianmodel:linuxscope:eqversion:10.0

Trust: 1.0

vendor:oraclemodel:tekelec platform distributionscope:lteversion:7.7.1

Trust: 1.0

vendor:sudomodel:sudoscope:eqversion:1.9.5

Trust: 1.0

vendor:netappmodel:ontap toolsscope:eqversion:9

Trust: 1.0

vendor:netappmodel:active iq unified managerscope:eqversion: -

Trust: 1.0

vendor:oraclemodel:micros workstation 6scope:lteversion:655

Trust: 1.0

vendor:oraclemodel:communications performance intelligence centerscope:gteversion:10.4.0.1.0

Trust: 1.0

vendor:oraclemodel:micros workstation 5ascope:eqversion:5a

Trust: 1.0

vendor:sudomodel:sudoscope: - version: -

Trust: 0.8

vendor:sudomodel:sudoscope:eqversion:1.9.0 to 1.9.5p1

Trust: 0.8

vendor:sudomodel:sudoscope:eqversion: -

Trust: 0.8

vendor:sudomodel:sudoscope:eqversion:1.8.2 to 1.8.31p2

Trust: 0.8

sources: JVNDB: JVNDB-2021-001020 // NVD: CVE-2021-3156

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov: CVE-2021-3156
value: HIGH

Trust: 1.0

134c704f-9b21-4f2e-91b3-4a467353bcc0: CVE-2021-3156
value: HIGH

Trust: 1.0

NVD: CVE-2021-3156
value: HIGH

Trust: 0.8

VULHUB: VHN-383931
value: HIGH

Trust: 0.1

VULMON: CVE-2021-3156
value: HIGH

Trust: 0.1

nvd@nist.gov: CVE-2021-3156
severity: HIGH
baseScore: 7.2
vectorString: AV:L/AC:L/AU:N/C:C/I:C/A:C
accessVector: LOCAL
accessComplexity: LOW
authentication: NONE
confidentialityImpact: COMPLETE
integrityImpact: COMPLETE
availabilityImpact: COMPLETE
exploitabilityScore: 3.9
impactScore: 10.0
acInsufInfo: NONE
obtainAllPrivilege: NONE
obtainUserPrivilege: NONE
obtainOtherPrivilege: NONE
userInteractionRequired: NONE
version: 2.0

Trust: 1.9

VULHUB: VHN-383931
severity: HIGH
baseScore: 7.2
vectorString: AV:L/AC:L/AU:N/C:C/I:C/A:C
accessVector: LOCAL
accessComplexity: LOW
authentication: NONE
confidentialityImpact: COMPLETE
integrityImpact: COMPLETE
availabilityImpact: COMPLETE
exploitabilityScore: 3.9
impactScore: 10.0
acInsufInfo: NONE
obtainAllPrivilege: NONE
obtainUserPrivilege: NONE
obtainOtherPrivilege: NONE
userInteractionRequired: NONE
version: 2.0

Trust: 0.1

nvd@nist.gov: CVE-2021-3156
baseSeverity: HIGH
baseScore: 7.8
vectorString: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
attackVector: LOCAL
attackComplexity: LOW
privilegesRequired: LOW
userInteraction: NONE
scope: UNCHANGED
confidentialityImpact: HIGH
integrityImpact: HIGH
availabilityImpact: HIGH
exploitabilityScore: 1.8
impactScore: 5.9
version: 3.1

Trust: 2.0

NVD: CVE-2021-3156
baseSeverity: HIGH
baseScore: 7.8
vectorString: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
attackVector: LOCAL
attackComplexity: LOW
privilegesRequired: LOW
userInteraction: NONE
scope: UNCHANGED
confidentialityImpact: HIGH
integrityImpact: HIGH
availabilityImpact: HIGH
exploitabilityScore: NONE
impactScore: NONE
version: 3.0

Trust: 0.8

sources: VULHUB: VHN-383931 // VULMON: CVE-2021-3156 // JVNDB: JVNDB-2021-001020 // NVD: CVE-2021-3156 // NVD: CVE-2021-3156

PROBLEMTYPE DATA

problemtype:CWE-193

Trust: 1.1

problemtype:Heap-based buffer overflow (CWE-122) [IPA evaluation ]

Trust: 0.8

problemtype: Out-of-bounds writing (CWE-787) [NVD evaluation ]

Trust: 0.8

sources: VULHUB: VHN-383931 // JVNDB: JVNDB-2021-001020 // NVD: CVE-2021-3156

THREAT TYPE

local

Trust: 0.2

sources: PACKETSTORM: 161163 // PACKETSTORM: 161135

TYPE

overflow, root

Trust: 0.3

sources: PACKETSTORM: 161139 // PACKETSTORM: 161140 // PACKETSTORM: 161145

EXPLOIT AVAILABILITY

sources:
            
            
            VULHUB: VHN-383931

PATCH
title:Buffer overflow in command line unescaping Apple Apple Security Updatesurl:https://www.sudo.ws/alerts/unescape_overflow.html
Trust: 0.8
title:Red Hat: Important: sudo security updateurl:https://vulmon.com/vendoradvisory?qidtp=red_hat_security_advisories&qid=RHSA-20210227 - Security Advisory
Trust: 0.1
title:Red Hat: Important: sudo security updateurl:https://vulmon.com/vendoradvisory?qidtp=red_hat_security_advisories&qid=RHSA-20210221 - Security Advisory
Trust: 0.1
title:Red Hat: Important: sudo security updateurl:https://vulmon.com/vendoradvisory?qidtp=red_hat_security_advisories&qid=RHSA-20210225 - Security Advisory
Trust: 0.1
title:Red Hat: Important: sudo security updateurl:https://vulmon.com/vendoradvisory?qidtp=red_hat_security_advisories&qid=RHSA-20210224 - Security Advisory
Trust: 0.1
title:Red Hat: Important: sudo security updateurl:https://vulmon.com/vendoradvisory?qidtp=red_hat_security_advisories&qid=RHSA-20210222 - Security Advisory
Trust: 0.1
title:Red Hat: Important: sudo security updateurl:https://vulmon.com/vendoradvisory?qidtp=red_hat_security_advisories&qid=RHSA-20210226 - Security Advisory
Trust: 0.1
title:Red Hat: Important: sudo security updateurl:https://vulmon.com/vendoradvisory?qidtp=red_hat_security_advisories&qid=RHSA-20210218 - Security Advisory
Trust: 0.1
title:Red Hat: Important: sudo security updateurl:https://vulmon.com/vendoradvisory?qidtp=red_hat_security_advisories&qid=RHSA-20210223 - Security Advisory
Trust: 0.1
title:Red Hat: Important: sudo security updateurl:https://vulmon.com/vendoradvisory?qidtp=red_hat_security_advisories&qid=RHSA-20210219 - Security Advisory
Trust: 0.1
title:Red Hat: Important: sudo security updateurl:https://vulmon.com/vendoradvisory?qidtp=red_hat_security_advisories&qid=RHSA-20210220 - Security Advisory
Trust: 0.1
title:Debian Security Advisories: DSA-4839-1 sudo -- security updateurl:https://vulmon.com/vendoradvisory?qidtp=debian_security_advisories&qid=e39766a043b3a0185adba1c80532d955
Trust: 0.1
title:Red Hat: Important: RHV-H security, bug fix, enhancement update (redhat-virtualization-host) 4.3.13url:https://vulmon.com/vendoradvisory?qidtp=red_hat_security_advisories&qid=RHSA-20210395 - Security Advisory
Trust: 0.1
title:Red Hat: Important: Red Hat Virtualization Host security bug fix and enhancement update [ovirt-4.4.4]url:https://vulmon.com/vendoradvisory?qidtp=red_hat_security_advisories&qid=RHSA-20210401 - Security Advisory
Trust: 0.1
title:Amazon Linux AMI: ALAS-2021-1478url:https://vulmon.com/vendoradvisory?qidtp=amazon_linux_ami&qid=ALAS-2021-1478
Trust: 0.1
title:Amazon Linux 2: ALAS2-2021-1590url:https://vulmon.com/vendoradvisory?qidtp=amazon_linux2&qid=ALAS2-2021-1590
Trust: 0.1
title:Cisco: Sudo Privilege Escalation Vulnerability Affecting Cisco Products: January 2021url:https://vulmon.com/vendoradvisory?qidtp=cisco_security_advisories_and_alerts_ciscoproducts&qid=cisco-sa-sudo-privesc-jan2021-qnYQfcM
Trust: 0.1
title:TA-Samediturl:https://github.com/stressboi/TA-Samedit 
Trust: 0.1
title:ScannerCVE-2021-3156url:https://github.com/SantiagoSerrao/ScannerCVE-2021-3156 
Trust: 0.1
title:Título del Proyectourl:https://github.com/lmol/CVE-2021-3156 
Trust: 0.1
title:CVE-2021-3156url:https://github.com/reverse-ex/CVE-2021-3156 
Trust: 0.1
title:LinuxDocLinksurl:https://github.com/neolin-ms/LinuxDocLinks 
Trust: 0.1
title:Baron-Samediturl:https://github.com/AbdullahRizwan101/Baron-Samedit 
Trust: 0.1
title:CVE-2021-3156url:https://github.com/ph4ntonn/CVE-2021-3156 
Trust: 0.1
sources:
            
            
            VULMON: CVE-2021-3156 // 
            
            
            
            JVNDB: JVNDB-2021-001020

EXTERNAL IDS
db:NVDid:CVE-2021-3156
Trust: 4.1
db:CERT/CCid:VU#794544
Trust: 2.7
db:PACKETSTORMid:161230
Trust: 1.1
db:PACKETSTORMid:161160
Trust: 1.1
db:PACKETSTORMid:161270
Trust: 1.1
db:PACKETSTORMid:161293
Trust: 1.1
db:MCAFEEid:SB10348
Trust: 1.1
db:OPENWALLid:OSS-SECURITY/2021/01/27/2
Trust: 1.1
db:OPENWALLid:OSS-SECURITY/2021/01/26/3
Trust: 1.1
db:OPENWALLid:OSS-SECURITY/2021/02/15/1
Trust: 1.1
db:OPENWALLid:OSS-SECURITY/2021/01/27/1
Trust: 1.1
db:OPENWALLid:OSS-SECURITY/2021/09/14/2
Trust: 1.1
db:OPENWALLid:OSS-SECURITY/2024/01/30/6
Trust: 1.0
db:OPENWALLid:OSS-SECURITY/2024/01/30/8
Trust: 1.0
db:PACKETSTORMid:176932
Trust: 1.0
db:JVNid:JVNVU96493147
Trust: 0.8
db:JVNid:JVNVU99480250
Trust: 0.8
db:JVNid:JVNVU98963695
Trust: 0.8
db:JVNid:JVNVU92304019
Trust: 0.8
db:JVNid:JVNVU90511416
Trust: 0.8
db:JVNid:JVNVU91343607
Trust: 0.8
db:ICS CERTid:ICSA-22-256-01
Trust: 0.8
db:JVNDBid:JVNDB-2021-001020
Trust: 0.8
db:PACKETSTORMid:161163
Trust: 0.2
db:PACKETSTORMid:161140
Trust: 0.2
db:PACKETSTORMid:161139
Trust: 0.2
db:PACKETSTORMid:161135
Trust: 0.2
db:PACKETSTORMid:161145
Trust: 0.2
db:PACKETSTORMid:161143
Trust: 0.1
db:PACKETSTORMid:161141
Trust: 0.1
db:PACKETSTORMid:161152
Trust: 0.1
db:PACKETSTORMid:161138
Trust: 0.1
db:PACKETSTORMid:161144
Trust: 0.1
db:PACKETSTORMid:161142
Trust: 0.1
db:PACKETSTORMid:161272
Trust: 0.1
db:PACKETSTORMid:161398
Trust: 0.1
db:PACKETSTORMid:161136
Trust: 0.1
db:PACKETSTORMid:161281
Trust: 0.1
db:PACKETSTORMid:161137
Trust: 0.1
db:SEEBUGid:SSVID-99117
Trust: 0.1
db:VULHUBid:VHN-383931
Trust: 0.1
db:VULMONid:CVE-2021-3156
Trust: 0.1
sources:
            
            
            CERT/CC: VU#794544 // 
            
            
            
            VULHUB: VHN-383931 // 
            
            
            
            VULMON: CVE-2021-3156 // 
            
            
            
            PACKETSTORM: 161139 // 
            
            
            
            PACKETSTORM: 161140 // 
            
            
            
            PACKETSTORM: 161163 // 
            
            
            
            PACKETSTORM: 161135 // 
            
            
            
            PACKETSTORM: 161145 // 
            
            
            
            JVNDB: JVNDB-2021-001020 // 
            
            
            
            NVD: CVE-2021-3156

REFERENCES
url:http://www.openwall.com/lists/oss-security/2021/01/26/3
Trust: 2.2
url:https://nvd.nist.gov/vuln/detail/cve-2021-3156
Trust: 1.3
url:https://www.kb.cert.org/vuls/id/794544
Trust: 1.1
url:https://tools.cisco.com/security/center/content/ciscosecurityadvisory/cisco-sa-sudo-privesc-jan2021-qnyqfcm
Trust: 1.1
url:https://security.netapp.com/advisory/ntap-20210128-0001/
Trust: 1.1
url:https://security.netapp.com/advisory/ntap-20210128-0002/
Trust: 1.1
url:https://support.apple.com/kb/ht212177
Trust: 1.1
url:https://www.sudo.ws/stable.html#1.9.5p2
Trust: 1.1
url:https://www.synology.com/security/advisory/synology_sa_21_02
Trust: 1.1
url:https://www.debian.org/security/2021/dsa-4839
Trust: 1.1
url:http://seclists.org/fulldisclosure/2021/jan/79
Trust: 1.1
url:http://seclists.org/fulldisclosure/2021/feb/42
Trust: 1.1
url:https://security.gentoo.org/glsa/202101-33
Trust: 1.1
url:http://packetstormsecurity.com/files/161160/sudo-heap-based-buffer-overflow.html
Trust: 1.1
url:http://packetstormsecurity.com/files/161230/sudo-buffer-overflow-privilege-escalation.html
Trust: 1.1
url:http://packetstormsecurity.com/files/161270/sudo-1.9.5p1-buffer-overflow-privilege-escalation.html
Trust: 1.1
url:http://packetstormsecurity.com/files/161293/sudo-1.8.31p2-1.9.5p1-buffer-overflow.html
Trust: 1.1
url:https://www.beyondtrust.com/blog/entry/security-advisory-privilege-management-for-unix-linux-pmul-basic-and-privilege-management-for-mac-pmm-affected-by-sudo-vulnerability
Trust: 1.1
url:https://www.oracle.com//security-alerts/cpujul2021.html
Trust: 1.1
url:https://www.oracle.com/security-alerts/cpuapr2022.html
Trust: 1.1
url:https://www.oracle.com/security-alerts/cpuoct2021.html
Trust: 1.1
url:https://lists.debian.org/debian-lts-announce/2021/01/msg00022.html
Trust: 1.1
url:http://www.openwall.com/lists/oss-security/2021/01/27/1
Trust: 1.1
url:http://www.openwall.com/lists/oss-security/2021/01/27/2
Trust: 1.1
url:http://www.openwall.com/lists/oss-security/2021/02/15/1
Trust: 1.1
url:http://www.openwall.com/lists/oss-security/2021/09/14/2
Trust: 1.1
url:http://seclists.org/fulldisclosure/2024/feb/3
Trust: 1.0
url:https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/cala5ftxiqbrryua2zqnjxb6oqmaxeii/
Trust: 1.0
url:http://www.openwall.com/lists/oss-security/2024/01/30/6
Trust: 1.0
url:https://www.vicarius.io/vsociety/posts/sudoedit-pwned-cve-2021-3156
Trust: 1.0
url:http://packetstormsecurity.com/files/176932/glibc-syslog-heap-based-buffer-overflow.html
Trust: 1.0
url:http://www.openwall.com/lists/oss-security/2024/01/30/8
Trust: 1.0
url:https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/lhxk6ico5aylgfk2tax5mzkuxtukwojy/
Trust: 1.0
url:https://kc.mcafee.com/corporate/index?page=content&id=sb10348
Trust: 1.0
url:https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=cve-2021-3156
Trust: 1.0
url:cve-2021-3156  
Trust: 0.8
url:http://jvn.jp/cert/jvnvu96493147
Trust: 0.8
url:https://jvn.jp/vu/jvnvu92304019/
Trust: 0.8
url:https://jvn.jp/vu/jvnvu98963695/
Trust: 0.8
url:https://jvn.jp/vu/jvnvu91343607/
Trust: 0.8
url:https://jvn.jp/vu/jvnvu99480250/
Trust: 0.8
url:http://jvn.jp/vu/jvnvu90511416/index.html
Trust: 0.8
url:https://www.jpcert.or.jp/at/2021/at210005.html
Trust: 0.8
url:https://kb.cert.org/vuls/id/794544
Trust: 0.8
url:https://www.cisa.gov/uscert/ics/advisories/icsa-22-256-01
Trust: 0.8
url:https://blog.qualys.com/vulnerabilities-research/2021/01/26/cve-2021-3156-heap-based-buffer-overflow-in-sudo-baron-samedit
Trust: 0.8
url:https://www.redhat.com/mailman/listinfo/rhsa-announce
Trust: 0.3
url:https://access.redhat.com/security/vulnerabilities/rhsb-2021-002
Trust: 0.3
url:https://access.redhat.com/security/cve/cve-2021-3156
Trust: 0.3
url:https://bugzilla.redhat.com/):
Trust: 0.3
url:https://access.redhat.com/security/team/key/
Trust: 0.3
url:https://access.redhat.com/articles/11258
Trust: 0.3
url:https://access.redhat.com/security/team/contact/
Trust: 0.3
url:https://access.redhat.com/security/updates/classification/#important
Trust: 0.3
url:https://usn.ubuntu.com/4705-1
Trust: 0.2
url:https://kc.mcafee.com/corporate/index?page=content&amp;id=sb10348
Trust: 0.1
url:https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/lhxk6ico5aylgfk2tax5mzkuxtukwojy/
Trust: 0.1
url:https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/cala5ftxiqbrryua2zqnjxb6oqmaxeii/
Trust: 0.1
url:https://access.redhat.com/errata/rhsa-2021:0225
Trust: 0.1
url:https://access.redhat.com/errata/rhsa-2021:0219
Trust: 0.1
url:https://usn.ubuntu.com/4705-2
Trust: 0.1
url:https://launchpad.net/ubuntu/+source/sudo/1.8.31-1ubuntu1.2
Trust: 0.1
url:https://nvd.nist.gov/vuln/detail/cve-2021-23239
Trust: 0.1
url:https://launchpad.net/ubuntu/+source/sudo/1.9.1-1ubuntu1.1
Trust: 0.1
url:https://launchpad.net/ubuntu/+source/sudo/1.8.16-0ubuntu1.10
Trust: 0.1
url:https://launchpad.net/ubuntu/+source/sudo/1.8.21p2-3ubuntu1.4
Trust: 0.1
url:https://access.redhat.com/errata/rhsa-2021:0223
Trust: 0.1
sources:
            
            
            CERT/CC: VU#794544 // 
            
            
            
            VULHUB: VHN-383931 // 
            
            
            
            PACKETSTORM: 161139 // 
            
            
            
            PACKETSTORM: 161140 // 
            
            
            
            PACKETSTORM: 161163 // 
            
            
            
            PACKETSTORM: 161135 // 
            
            
            
            PACKETSTORM: 161145 // 
            
            
            
            JVNDB: JVNDB-2021-001020 // 
            
            
            
            NVD: CVE-2021-3156

CREDITS
This document was written by Timur Snoke.Statement Date:   February 15, 2021
Trust: 0.8
sources:
            
            
            CERT/CC: VU#794544

SOURCES
db:CERT/CCid:VU#794544
db:VULHUBid:VHN-383931
db:VULMONid:CVE-2021-3156
db:PACKETSTORMid:161139
db:PACKETSTORMid:161140
db:PACKETSTORMid:161163
db:PACKETSTORMid:161135
db:PACKETSTORMid:161145
db:JVNDBid:JVNDB-2021-001020
db:NVDid:CVE-2021-3156

LAST UPDATE DATE
2025-11-26T22:11:06.110000+00:00

SOURCES UPDATE DATE
db:CERT/CCid:VU#794544date:2021-04-26T00:00:00
db:VULHUBid:VHN-383931date:2022-09-03T00:00:00
db:VULMONid:CVE-2021-3156date:2024-02-04T00:00:00
db:JVNDBid:JVNDB-2021-001020date:2022-09-15T05:47:00
db:NVDid:CVE-2021-3156date:2025-11-10T14:41:45.053

SOURCES RELEASE DATE
db:CERT/CCid:VU#794544date:2021-02-04T00:00:00
db:VULHUBid:VHN-383931date:2021-01-26T00:00:00
db:VULMONid:CVE-2021-3156date:2021-01-26T00:00:00
db:PACKETSTORMid:161139date:2021-01-27T14:06:12
db:PACKETSTORMid:161140date:2021-01-27T14:06:20
db:PACKETSTORMid:161163date:2021-01-28T13:59:34
db:PACKETSTORMid:161135date:2021-01-27T14:05:32
db:PACKETSTORMid:161145date:2021-01-27T14:07:05
db:JVNDBid:JVNDB-2021-001020date:2021-02-08T00:00:00
db:NVDid:CVE-2021-3156date:2021-01-26T21:15:12.987